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Influence of seed ripeness, sarcotesta, drying and storage on germinability of papaya (Carica papaya L.) seed

Papaya (Carica papaya L.) is a popular tropical fruit which is propagated by seed. However, germination and the procurement of good seedlings are difficult in this species due to the nature of the seed. Thus a series of studies to evaluate the influence of fruit maturity, sarcotesta and drying on...

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Main Author: U. R., Sangakkara
Format: Article
Language:English
Published: Universiti Putra Malaysia Press 1995
Online Access:http://psasir.upm.edu.my/id/eprint/3338/1/Influence_of_Seed_Ripeness%2C_Sarcotesta%2C_Drying_and_Storage_on_Germinability.pdf
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spelling oai:psasir.upm.edu.my:3338 http://psasir.upm.edu.my/id/eprint/3338/ Influence of seed ripeness, sarcotesta, drying and storage on germinability of papaya (Carica papaya L.) seed U. R., Sangakkara Papaya (Carica papaya L.) is a popular tropical fruit which is propagated by seed. However, germination and the procurement of good seedlings are difficult in this species due to the nature of the seed. Thus a series of studies to evaluate the influence of fruit maturity, sarcotesta and drying on germination and production of healthy seedlings was carried out. The characteristics of papaya seed change with fruit maturity. Speed of germination increases with fruit maturity. Thus, the best seed for germination and for the the procurement of healthy seedlings is obtained from ripe or over-ripe fruits. The presence of the sarcotesta reduces germination and increases the number of abnormal seedlings. Incorporation of the sarcotesta in the germination medium of papaya or rice seeds did not inhibit their germination. This suggests that inhibition is caused by the intact sarcotesta rather than inhibitors derived from it. Drying papaya seeds under shade and ambient temperature maintained germinability to a greater degree than when seeds were desiccated in ovens. The reduction of seed moisture below 10% reduced germination significantly, indicating an intermediate behaviour pattern for papaya seeds in contrast to orthodox or recalcitrant seeds. Universiti Putra Malaysia Press 1995 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/3338/1/Influence_of_Seed_Ripeness%2C_Sarcotesta%2C_Drying_and_Storage_on_Germinability.pdf U. R., Sangakkara (1995) Influence of seed ripeness, sarcotesta, drying and storage on germinability of papaya (Carica papaya L.) seed. Pertanika Journal of Tropical Agricultural Science, 18 (3). pp. 193-199. ISSN 0126-6128 http://www.pertanika.upm.edu.my/Pertanika%20PAPERS/JTAS%20Vol.%2018%20(3)%20Dec.%201995/JTAS%20Vol.18%20(3)%201995%20(Pg%20193-199).pdf
institution UPM IR
collection UPM IR
language English
description Papaya (Carica papaya L.) is a popular tropical fruit which is propagated by seed. However, germination and the procurement of good seedlings are difficult in this species due to the nature of the seed. Thus a series of studies to evaluate the influence of fruit maturity, sarcotesta and drying on germination and production of healthy seedlings was carried out. The characteristics of papaya seed change with fruit maturity. Speed of germination increases with fruit maturity. Thus, the best seed for germination and for the the procurement of healthy seedlings is obtained from ripe or over-ripe fruits. The presence of the sarcotesta reduces germination and increases the number of abnormal seedlings. Incorporation of the sarcotesta in the germination medium of papaya or rice seeds did not inhibit their germination. This suggests that inhibition is caused by the intact sarcotesta rather than inhibitors derived from it. Drying papaya seeds under shade and ambient temperature maintained germinability to a greater degree than when seeds were desiccated in ovens. The reduction of seed moisture below 10% reduced germination significantly, indicating an intermediate behaviour pattern for papaya seeds in contrast to orthodox or recalcitrant seeds.
format Article
author U. R., Sangakkara
spellingShingle U. R., Sangakkara
Influence of seed ripeness, sarcotesta, drying and storage on germinability of papaya (Carica papaya L.) seed
author_facet U. R., Sangakkara
author_sort U. R., Sangakkara
title Influence of seed ripeness, sarcotesta, drying and storage on germinability of papaya (Carica papaya L.) seed
title_short Influence of seed ripeness, sarcotesta, drying and storage on germinability of papaya (Carica papaya L.) seed
title_full Influence of seed ripeness, sarcotesta, drying and storage on germinability of papaya (Carica papaya L.) seed
title_fullStr Influence of seed ripeness, sarcotesta, drying and storage on germinability of papaya (Carica papaya L.) seed
title_full_unstemmed Influence of seed ripeness, sarcotesta, drying and storage on germinability of papaya (Carica papaya L.) seed
title_sort influence of seed ripeness, sarcotesta, drying and storage on germinability of papaya (carica papaya l.) seed
publisher Universiti Putra Malaysia Press
publishDate 1995
url http://psasir.upm.edu.my/id/eprint/3338/1/Influence_of_Seed_Ripeness%2C_Sarcotesta%2C_Drying_and_Storage_on_Germinability.pdf
_version_ 1819292810878124032
score 13.4562235

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